Low noise transducer system

Details Low noise transducer system Low noise transducer system

1974-04-16

1993-09-07

Tudor, Harold J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

310337, 367172, 367176, H04R 2300

Patent

active

052435660

ABSTRACT:
An acoustic array of special utility in deep operating antisubmarine torpedoes comprises a plurality of individual transducer elements supported by a back-plate member. An acoustic window made of an elastomeric or plastic material is mounted against the front faces of the transducer elements and forms part of the water-proof housing of the torpedo. The backplate provides abuttive support to the transducer elements against crush pressure exerted by ambient water against the acoustic window. Inserts, made of an acoustic decoupling material which exhibits high crush strength characteristics, are interposed between each transducer element and the backplate. The backplate is made of body sections having interposed therebetween very thin layers of a compliant material, with the layers bondingly confined between the body sections. The compliant material is chosen to be of a type which damps acoustic vibrations which may be present in the backplate by the mechanism of "coulomb friction damping".

REFERENCES:
patent: 2427062 (1947-09-01), Massa
patent: 2768364 (1956-10-01), Camp
patent: 2906993 (1959-09-01), Steinberger
patent: 3082401 (1963-03-01), Bland et al.
patent: 3277434 (1966-10-01), Buchanan
patent: 3372370 (1968-03-01), Cyr
patent: 3492634 (1970-01-01), Massa

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